中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 云南天文台
  3. 中国科学院云南天文台
  4. 星系类星体研究组
Discovery of a New Gamma-Ray Source, LHAASO J0341+5258, with Emission up to 200 TeV

文献类型：期刊论文

作者Cao, Zhen1,2,3; Aharonian, F.4,5; An, Q.6,7; Axikegu8; Bai, L. X.9; Bai, Y. X.1,3; Bao, Y. W.10; Bastieri, D.11; Bi, X. J.1,2,3; Bi, Y. J.1,3
刊名ASTROPHYSICAL JOURNAL LETTERS
出版日期2021-08
卷号917期号:1
ISSN号2041-8205
DOI10.3847/2041-8213/ac0fd5
产权排序第29完成单位
文献子类Article
英文摘要We report the discovery of a new unidentified extended gamma-ray source in the Galactic plane named LHAASO J0341+5258 with a pretrial significance of 8.2 standard deviations above 25 TeV. The best-fit position is R.A. = 55.degrees 34 +/- 0.degrees 11 and decl. = 52.degrees 97 +/- 0.degrees 07. The angular size of LHAASO J0341+5258 is 0.degrees 29 +/- 0.degrees 06(stat) +/- 0.degrees 02(sys). The flux above 25 TeV is about 20% of the flux of the Crab Nebula. Although a power-law fit of the spectrum from 10 to 200 TeV with the photon index alpha = 2.98 +/- 0.19(stat) +/- 0.02(sys) is not excluded, the LHAASO data together with the flux upper limit at 10 GeV set by the Fermi-LAT observation, indicate a noticeable steepening of an initially hard power-law spectrum with a cutoff at approximate to 50 TeV. We briefly discuss the origin of ultra-high-energy gamma rays. The lack of an energetic pulsar and a young supernova remnant inside or in the vicinity of LHAASO J0341+5258 challenge, but do not exclude, both the leptonic and hadronic scenarios of gamma-ray production.
学科主题天文学
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词PULSARS
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000684010500001
资助机构National Key R&D Program of China[2017YFA0402701] ; CAS Key Research Program of Frontier Sciences[QYZDJ-SSW-SLH047]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/24519]  
专题星系类星体研究组
云南天文台_高能天体物理研究组
作者单位1.Key Laboratory of Particle Astrophysics & Experimental Physics Division & Computing Center, Institute of High Energy Physics, Chinese Academy of Sciences, 100049 Beijing, People's Republic of China; licong@ihep.ac.cn, chensz@ihep.ac.cn, wusha@ihep.ac.cn;
2.University of Chinese Academy of Sciences, 100049 Beijing, People's Republic of China;
3.TIANFU Cosmic Ray Research Center, Chengdu, Sichuan, People's Republic of China;
4.Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, 2 Dublin, Ireland;
5.Max-Planck-Institut for Nuclear Physics, P.O. Box 103980, D-69029 Heidelberg, Germany;
6.State Key Laboratory of Particle Detection and Electronics, People's Republic of China;
7.University of Science and Technology of China, 230026 Hefei, Anhui, People's Republic of China; yangrz@ustc.edu.cn, lbing@ustc.edu.cn;
8.School of Physical Science and Technology & School of Information Science and Technology, Southwest Jiaotong University, 610031 Chengdu, Sichuan, People's Republic of China;
9.College of Physics, Sichuan University, 610065 Chengdu, Sichuan, People's Republic of China;
10.School of Astronomy and Space Science, Nanjing University, 210023 Nanjing, Jiangsu, People's Republic of China;
推荐引用方式
GB/T 7714		 Cao, Zhen,Aharonian, F.,An, Q.,et al. Discovery of a New Gamma-Ray Source, LHAASO J0341+5258, with Emission up to 200 TeV[J]. ASTROPHYSICAL JOURNAL LETTERS,2021,917(1).
APA Cao, Zhen.,Aharonian, F..,An, Q..,Axikegu.,Bai, L. X..,...&Zuo, X..(2021).Discovery of a New Gamma-Ray Source, LHAASO J0341+5258, with Emission up to 200 TeV.ASTROPHYSICAL JOURNAL LETTERS,917(1).
MLA Cao, Zhen,et al."Discovery of a New Gamma-Ray Source, LHAASO J0341+5258, with Emission up to 200 TeV".ASTROPHYSICAL JOURNAL LETTERS 917.1(2021).

入库方式： OAI收割

来源：云南天文台

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。